I just installed back iTunes 9, and find out the store arrow button pop out again on fresh installation…. = =” yeah so annoying

here the fix:

OS X Fix

Go to Terminal and type:

defaults write com.apple.iTunes show-store-arrow-links -bool FALSE

Windows XP & Vista Fix

• Ensure iTunes is not open. Browse to the iTunes Application Data folder (C:Documents and SettingsUserApplication DataApple ComputeriTunes on XP, C:UsersUserAppDataRoamingApple ComputeriTunes (AppData is a hidden folder) on Vista, substituting the drive letter and the user profile name where necessary.
• Backup and open the iTunesPrefs.xml with WordPad.
• Find the User Preferences key, and below the <dict> tag insert:<key>show-store-arrow-links</key>
  <data>
  AA==
  </data>
• Launch iTunes & the store arrows will be gone.